Explanation: Within the four seas: the four seas, the old means China is now also refers to the world. Unique within the four seas. Source: Han Dongfang Shuo "A Difficult to an" easy to learn to understand effect Lok Road, Shen Yi, thinking smart at home and unparalleled, the CMP can be described. " Examples: Kyoto is the wealth of a few prosperous ~, heroes dignified appearance. (Yuan HU and "butterfly children Jinling title King")